Shaving device



Get. 12, 1943. R. NAEGELI SHAVING DEVICE Filed May 14, 1941 2Sheets$heet 1 Oct. 12, 1943 Y R. NAEGELI 2,331,417

SHAVING DEVICE Filed May 14, 1941 2 Sheets-Sheet 2 INVENTORJ 5 22Patented Oct. 12, 1943 SHAVING DEVICE Rudolf Naegeli, Bern, SwitzerlandApplication May 14, 1941, Serial No. 393,445 In Switzerland May 22, 194012 Claims. (01. 30-43) This invention relates to razor and hair clippersof the power driven type in which the actuating motor is positionedwithin the handle and in which said motor is provided with an actuatingconnection to a rotatable razor blade, protected by a cover, which razorblade may be applied to the face of the user or to other parts of thebody to remove hair.

The invention particularly relates to such devices where aneccentrically disposed razor blade arranged between holding andprotecting elements travels with withholding and shearing edges directlyover the skin. The shearing edge of the razor blade operates on astationary holding plate having edged holes or recesses arranged aswithholding devices for skin and hairs in the path of the razor bladeand located inside of a border of a stationary plate to the efiect thatthe skin shall be well supported by the continuous border of the holesand the hairs extending into the holes shall be caught and preventedfrom being pushed back by the blade.

A further object of the invention is to have a shaving device with arotatable, axially adjustable shaving blade, which is kept continuouslyand resiliently in close contact with said holding plate and afterremoving the cover may be lifted up by an ejecting member and be removedfor an exchange.

Another object of the invention is to combine the shaving tool with areciprocating hair cutting device and to shift its moving cutting combto and fro upon the stationary comb of the hair cutting device either atacute angles or parallely.

With shaving implements of the kind described it is: possible to shaveeither dry or wet even by using soap or cream. The annexed drawingsrepresent several embodiments of the invention as examples.

Fig. l is a longitudinal section through the head of the handle of thedevice.

Fig. 2 a lateral view of said head and Fig. 2a a sectional view,

Fig. 3 is a plan of the shaving device,

Fig. shows the head seen from beneath.

Fig. 5 is a longitudinal section across the head of a shaving devicecombined with a hair cutting device.

Fig. 6 is a. plan of Fig. 5 and Figs. 7 to 9 are plans showing variousforms of blades.

Similar letters of reference indicate similar parts.

Figures 1 to 3 of the drawings show a shaving device having a hollowround head A to which the shaving tools B are removably attached. An

'electro motor D and a handle C are connected to head A. A free space Fis left between the outside diameter of the stator of motor D and theinside diameter of the handle C as air circulating and cooling means.The air is admitted at the bottom of handle C and leaves the handlecasing at the slots G. Head A and handle C are preferably made ofBakelite or another suitable material. The shaving tools B are made ofhard noncorrosive steel or may be protected against corrosion by coatsof nickel or chrome.

A plate l provided with holes or excavations 3 arranged concentricallyto the plates outer edge 2 and to the handles axis and serving asholding elements for hair and skin is bolted to the head A. Plate l ismachined plane on its uper side and the upper edge of its outer borderis acute-angled to be adapted to lift up the hairs when having theapparatus traveling over the,

skin. Shoulders 6 arranged diametrically opposite each other areprovided on the side borders of the head A to assure the exact positionof the plate with respect to the shaft 5 of the motor 6. Plate 5possesses at its center a central opening 8 through which the carrierhead 8 fast to shaft 5 of the motor is extended. This carrier headcarries on its upper face a cylindrical pin 9 coaxial with the motorshaft and besides this pin a second eccentrical pin it. The blade H is acircular disk provided with a conical and downwardly directed cuttingedge l2. It possesses two square holes symmetrically arranged withrespect to its center being the same distance from each other as pins 9and ill. It is stuck with its holes over the said pins assuming itsrelative position to the center. Thereby it takes an eccentric positionwith respect to the motor shaft and swings around this shaft when thisshaft is rotated. The diameter of its circumferential edge is such, thatthis edge in its extreme position overlaps the outer edges of the holes3 so as toenclose and cut the hairs extended into said holes. If theblade is circular it must be fastened to the motor shaft eccentricallyto its axis, so that it can a1- ternatingly overlap and uncover theholes 3 of plate l, which receive the hairs. As shown by Figures 7 to 9the blade may also have other forms digonous, elliptic or be providedwith teeth and be centrically arranged to the motor shaft, whereby theholes of the stationary plate 8 will be overlapped and be freed again.There is a cover 53 over the blade it having on two opposite sides lugsIt by means of which it is clamped fast to the noses E5 of the head A.On both sides of the cover there is a web i6 by which it rests on thehead A such that the space between cover l3 and plate I remains alwaysthe same. There are also between pins 9 and I downwardly directed pinsI! fast to cover l3 which bear upon the flat middle portion of blade iito maintain the blade in close contact with plate i during its circularmovement, so that an effective cutting off of the hair will be obtainedbetween the blade edge i2 and the sharp edges of holes 3. Bythese holes3 not only the hairs projecting into the same are held fast but alsoportions of the skin having the size of the holes. These portions aremomentarily rigidly fast in front of the cutting edge so that the hairsmay be shaved off flush with the skin rfac In a groove of one of theears l8 of the head A between two of the noses l there is an eiector arm19 which may be swung around a stem 20 provided with a lever arm 2|extending under the blade II. By swinging the ejecting arm 19 away fromthe stop 22 in Fig. 3 lever arm 2| will lift the blade on one side andremove the same from the pins 9 and I0 to have it exchanged.

The motor shaft 5 is lodged in the bearing 23 in the head A. This shaftcarries a fan 23a providing circulation of the air within the head A ofthe handle C.

With a view toward regulating the speed of the motor shaft 5 and theeccentric cutting edge a regulating ring 24 provided with two handles 25is arranged in the lower portion of the head A. This ring has twodownwardly extended cams 26 which bear against the end portions of aflat spring 21 while the middle portion 28 of the spring bears against adisk 29 fast to the motor shaft 5. By a turn of the handles 25 spring.21 may be bent more or less and thereby the friction between disk 29 andspring portion 28 be varied accordingly and also speed of the motorshaft 5 and the cutting blade ii. The lower portion of the head A asshown in Fig. 4 possesses two members E arranged opposite each other andconcentrically with respect to the shaft 5. These are spaced from eachother and provided with outside threads for the inside threads of handleC. The stator of the electromotor D bears against said members E and isheld fast by the same by bolts.

The Figs. 5 and 6 represent another embodiment of the invention. Thisrotatable shaving implement is combined with a reciprocating haircutting device in one and the same instrument and head A.

Here a plate 30 is fastened to the head A by screws 3|. Said plate isstationary and circular on one side at 32 and is provided therewith theholes 33 of any suitable form serving as holding means. The oppositeside of the plate is straight lined at 34 and is provided with a row ofcutting teeth 35. Above the plate 30 there is as in the here abovedescribed embodiment a circular blade ll arranged eccentrically withrespect to shaft 5 and put into a circular movement by means of the head8 fast to the motor shaft and the pins 9 and I0 engaged into holes ofthe blade. A cover l3 protects the blade II and is clamped fast to fournoses l5 of the head A arranged opposite of each other. Pins areprovided on said head engaged between the pins 9 and I0 and adapted tomaintain blade ii in close contact with plate 30, so that the cuttingedge l2 of the blade effects an exact cut of! with the edges of theholes 33 and shaves off any hairs extended into the holes. The coverextends on the dividing line between the hair cutting and the shavingside and is bevelled oi! towards both sides.

The ejecting of the shaving blade I I is effected with the aid of a flatspring 31 arranged in the central bore 36 of the head A and capable ofbeing slid upwards by means of a knob 38. Said spring extends underblade H and permits the lifting off of said blade from the pins 9 and 10after the cover has been removed. Having removed the blade Il saidspring is slid back again so that it does no more project over thesurface of plate 30.

Underneath plate 30 and guided in slots 42 by pins 39 and 40 fast tosaid plate is a movable combing plate 4! provided with cutting teeth onits front side. These teeth cooperate with the cutting teeth of plate30. Combing plate 4! carries also on its opposite side two legs 43between which is located an eccentric disk 44 fast to head 8. Theeccentric disk is eccentric with'regard to the motor shaft 5 and to pin9 and is moved slidingly around shaft 5 while combing plate 4| isreciprocated. Flat springs 45 are arranged on pins 39 and 40 and may bebent by means of nuts 46. Thereby a pressure may be produced upon themovable combing plate and the friction may be varied btween the twoplates 30 and 4| thus permitting the regulating of the speed of themoving parts within certain limits. Besides as in the embodimentsaccording to Figures 1 and 2 a fan 23a on the motorshaft and aregulating ring 24 with handies 25 may be provided for the earns 26 ofsaid ring bearing on a spring 21 the median portion 28 of which is infrictional contact with a stationary brake disk 29. By regulating saidring 24 with the handles 25 the pressure upon the brake disk may beincreased or decreased and thereby the speed of the motor be regulated.

According to Fig. 7 the blade may be shaped as a symmetric digone whichis oncentrically attached to the end of the motor .iaft.

Figs. 8 and 9 show forms of blades which are attached to the head andarranged eccentrically with regard to the motor shaft. The bladeaccording to Fig. 9 is provided with teeth.

The presented embodiments show devices with blades driven directly bythe motor shaft. The blades having a continually edge. It is a matter ofchoice that the blades can also have a toothed edge. Also the driving ofthe blades could be effected by gear wheels, worms or frictional gearwithout departing from the scope of the invention.

It is understood that the features herein described may be modified inmany instances and changes in construction may be made by those skilledin the art without departing from the general broad scope of theinvention.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the United States is:

1. In a shaving device of the power driven type in combination, astationary plate having a laterally closed at least partly curved,protecting rim and a central opening, a rotary razor blade having aneccentrically positioned cutting edge overlying said rim of thestationary plate, means on said rim for withholding the skin with thehair to be cut, and means for maintaining the edge of the razor blade inclose contact with the rim of the stationary plate.

2. In a shaving device of the power driven type in combination, astationary plate head having two digonal ears and having a tubularshank, a handle casing secured to the shank, a stationary plate having alaterally closed at least partly curved protecting rim provided withholes and recesses and a central opening, said plate mounted on saidhead, a rotary razor blade having an eccentrically positioned cuttingedge overlying said rim of said stationary plate, means for carrying therazor blade and means for maintaining the razor blade in close contactwith the rim of the stationary plate.

3. In a shaving device of the power driven type in combination, astationary circular plate having a laterally closed protecting rim withholes and recesses and a central opening, said holes and recesses havingacute edges for withholding the skin with the hair to be cut locatedinside of a skin protecting border, a rotating razor blade having aneccentrically positioned cutting edge overlying said rim and overlappingsome of said holes and recesses of said stationary plate successivelycooperating with the edges of said holes and recesses, a carrier headfor the blade having pins for carrying the razor blade and extendedthrough the central opening, a cover arranged over said blade andstationary plate, members fast on the inside of said cover formaintaining the edge of the razor blade in close contact with the rim ofthe stationary plate.

4. In a shaving device of the power driven type in combination, a planestationary circular plate having a laterally closed protecting rimprovided with holes and recesses and a central opening, said holes andrecesses having acute edges for withholding the skin with the hair to becut, located inside of a. skin protecting border, an apertured rotatingrazor blade having an eccentrically positioned cutting edge overlyingsaid rim and overlapping some of said holes and recesses of thestationary plate and cooperating successively with the edges of saidholes and recesses, a carrier head having pins projecting into theapertures of the razor blade for carrying the razor blade and alsoprovided with a groove, a cover arranged over said razor blade andstationary plate, pins fast to the inside of said cover for maintainingthe edge of the razor blade in close contact with the rim of thestationary plate, a lever with stem and ejecting arm lodged in thegroove of the head, and the ejecting arm being extended underneath therazor blade for e ecting the razor blade after removal of the cover.

5. In a shaving device of the power driven type in combination, a planestationary circular plate having a laterally closed protecting rimprovided with holes and recesses and a central opening,

said holes and recesses having acute edges for withholding the skin withthe hair to be cut, located inside of a skin protecting border, anapertured rotating razor blade having an eccentrically positioned edgeoverlying said rim and overlapping some of said holes and recesses ofthe stationary plate and successively cooperating with the edges of saidholes and recesses, a carrier head having pins projecting into theapertures of the razor blade for carrying the razor blade and alsoprovided with a groove, a cover arranged over said razor blade andstationary plate, pins fast to the inside of said cover for maintainingthe edge of the razor blade in close contact with the rim of thestationary plate, a lever having stem and an ejecting arm lodged in thegroove of the head, the arm being extended underneath the razor bladefor ejecting the razor Ill blade after removal of the cover, a rotaryring with diagonally positioned handles inserted between the head andhandle-casing, said handles extended to the outside ofthe'handle-casing, downwardly directed cams on said ring, a supportingshaft for the carrier head and blade, a disk on the said shaft and aflat spring having \a central part in frictional contact with the diskand adapted to regulate said frictional contact and the speed of'thedevice.

6 In a shaving device according to claim 5, in which the razor blade isprovided with a toothed cutting edge and is eccentrically arranged onthe supporting shaft.

7. In a shaving device according to claim 5, in which the razor blade isof digonous form and is centrically attached on the supporting shaft.

8. In a shaving and hair cutting device of the power driven type incombination a stationary plate provided with a partly curved and partlylaterally closed protecting rim and a partly toothed straight rim and acentral opening, a rotary razor blade having an eccentrically positionedcutting edge, overlying said rim of the stationary plate, means on saidrim for withholding the skin with the hair to be cut, a reciprocatingmovable toothed plate with a straight rim cooperating with the teeth ofsaid stationary plate, means for guiding the movable plate on thestationary plate, and means for maintaining the edge of the razor bladein close contact with the rim and the movable plate in close contactwith the toothed part of the stationary plate.

9. In a shaving and hair cutting device of the power driven type incombination a stationary plate head having two diagonally arranged earsand a slot, a tubular shank extending from the head, a handle-casingsecured to the shank, a plane stationary plate having a partly curvedand partly laterally closed protecting rim and a partly straight toothedrim and a central opening, the curved rim having holes and recessesprovided with acute edges for withholding the skin with the hair to becut, a rotary apertured razor blade having an eccentrically positionedcutting edge overlying said rim and overlapping some of said holes andrecesses of the stationary plate, a reciprocating movable plate withcutting teeth on a straight line slidably arranged with respect to thestationary plate, a supporting shaft, a carrier head having pinsprojecting into the apertures of the razor blade on the upporting shaftfor carrying the razor blade, an eccentric on the same carrier head andmoved by the same supporting shaft for reciprocating the movable plate,a cover resiliently clamped on said ears of the head, pins fast to theinside of said cover for maintaining the edge of the razor blade inclose contact with the rim of the stationary plate, a sleeve shapedspring arranged in the central bore of the plate head and extendedunderneath of the razor blade and a knob attached to said springarranged to slide in the slot in the head for ejecting the blade afterremoval of the cover.

10. In a shaving and hair cutting device of the power driven type incombination a stationary plate provided with a partly curved and partlylaterally closed protecting rim and a partly toothed straight rim and acentral opening, a rotary apertured razor blade having an eccentricallypositioned cutting edge, overlying said rim of the stationary plate,means on said rim for withholding the skin with the hair to be cut, areciprocating movable toothed plate having a straight rim cooperatingwith the teeth of said stationary plate, means for guiding the movableplate on the stationary plate, and means for maintaining the edge of therazor blade in close contact with the rim and the movable plate in closecontact with the toothed part 01 the sta= tionary plate. a mainsupporting shaft, a centrally bored carrier head having pins projectinginto the apertures or the razor blade and mounted on the supportingshaft for carrying the razor blade. said bored head having opposed earsand a slot therein, an eccentric on the same carrier head and moved bythe main supporting shaft for reciprocating the movable plate, a coverreslliently clamped on said ears of the head, pins fast to the inside ofsaid cover for maintaining the edge of the razor blade in close contactwith the rim of the stationary plate, a sleeve shaped spring arranged inthe central bore of the head and extended underneath ot the razor bladeand a knob attached to said spring arranged to slide in the slot in thehead for ejecting the blade after removal of the cover, a rotary ringwith diagonal- 1y arranged handles inserted between the head and handlecasing, said handles extended to the outside of the handle-casing,downwardly directed cams on said ring, a disk fast on the main shaft anda flat spring having a central part on frictional contact with the diskand adapted to regulate said frictional contact and the speed of thedevice.

11. In a shaving and hair cutting device according to claim 10, in whichthe razor blade is of circular form and provided with teeth and iseccentrically attached on the supporting shaft.

12. In a shaving and hair cutting device according to claim 10, in whichthe razor blade is of digonous form and is attached on the axis

